#3630BB#3630BB

#3630BB is a dark, highly saturated blue. Relative luminance 0.065; OKLCH L 42.2% C 0.207 H 274.7°. Best body text is #FFFFFF at 9.14:1 contrast (WCAG AA passes).

Color values

HEX	#3630BB
RGB	rgb(54, 48, 187)
HSL	hsl(243, 59%, 46%)
HSV	hsv(243, 74%, 73%)
CMYK	cmyk(71.1%, 74.3%, 0%, 26.7%)
CIE-LAB	lab(30.60, 46.74, -71.49)
CIE-LCH	lch(30.60, 85.41, 303.18°)
OKLab	oklab(42.18% 0.0171 -0.2067)
OKLCH	oklch(42.18% 0.207 274.7)
XYZ	xyz(11.5449, 6.4849, 47.6474)
Luminance	0.0649 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Sapphire (survey)

#2138AB

ΔE00 4.24

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3630BB #B5BB30

analogous

#306FBB #3630BB #7B30BB

triadic

#3630BB #BB3630 #30BB36

tetradic

#3630BB #BB306F #B5BB30 #30BB7B

square

#3630BB #BB306F #B5BB30 #30BB7B

split-complementary

#3630BB #BB7B30 #6FBB30

monochromatic

#1A175A #28238A #3630BB #5A55D3 #8986E0

Accessibility & contrast

On white

9.14

#3630BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#3630BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3630BB

9.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3630BB	#FFFFFF	#000000	##FFFFFF
##3630BB	1.00	9.14	2.30	9.14
#FFFFFF	9.14	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EBF

Deuteranopia (green-blind)

#0042B9

Tritanopia (blue-blind)

#005873

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3630bb;
/* rgb */ color: rgb(54, 48, 187);
/* oklch */ color: oklch(42.2% 0.207 274.7);

Tailwind

colors: {
  custom: {
    50: '#816ad1',
    500: '#3630bb',
    950: '#000000',
  },
}

SCSS

$custom: #3630bb;
$custom-light: #816ad1;
$custom-dark: #000000;

JSON

{
  "hex": "#3630bb",
  "rgb": {
    "r": 54,
    "g": 48,
    "b": 187
  },
  "hsl": {
    "h": 242.59,
    "s": 59.149,
    "l": 46.078
  },
  "oklch": {
    "l": 0.42183,
    "c": 0.20744,
    "h": 274.7
  },
  "luminance": 0.06486
}

Semantic roles & 50–950 ramp

primary

#3630BB

secondary

#C6C97D

accent

#E245DC

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3630BB

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →